♦ Pharma mogul Richard Ullman is reportedly the man behind the new $75 million listing at 15 CPW. Ullman paid just $23.5 million for the 18th-floor duplex penthouse back when he bought it in March. [NYO]♦ Jewelry exec Leonard Littman and his wife Barbara have sold their 44th-floor apartment at the Museum Tower on West 53rd Street for $5.5 million. The couple originally listed the two-bedroom condo for $6.45 million back in July. [Cityfile]♦ UBS exec Ramesh Singh is having a hard time unloading the two Park Avenue apartments he has on the market. His co-op at 860 Park was first listed for $13.4 million; it's now down to $9.5 million. Meanwhile, his 15-room duplex at 823 Park, which was originally listed $24.75 million, is now $19.95 million, less than what he paid for it four months ago. [NYO, Corcoran, BHS]